203111043979 has 2 divisors, whose sum is σ = 203111043980. Its totient is φ = 203111043978.

The previous prime is 203111043977. The next prime is 203111044009. The reversal of 203111043979 is 979340111302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203111043979 - 2¹ = 203111043977 is a prime.

Together with 203111043977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (203111043977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101555521989 + 101555521990.

It is an arithmetic number, because the mean of its divisors is an integer number (101555521990).

Almost surely, 2^203111043979 is an apocalyptic number.

203111043979 is a deficient number, since it is larger than the sum of its proper divisors (1).

203111043979 is an equidigital number, since it uses as much as digits as its factorization.

203111043979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The spelling of 203111043979 in words is "two hundred three billion, one hundred eleven million, forty-three thousand, nine hundred seventy-nine".